Improvement in machines for forging hammers



w.. EVANS.

Machines for Forging Hammers.

Patented Nov. 25,1873.

f fw WITNESSES ivd u Hamel/s.

UNITED STATES PATENT OFFICE.

WILLIAM EVANS, OF LONG ISLAND CITY, NEW YORK.

IMPROVEMENT IN MACHINES FOR FORGING HAMMERS.

Specification forming part of Leiters Patent No. 144,969, dated November25, 1873.; application filed October 25, 1873.

To all whom t may concer/n:

Be it known that I, WILLIAM EvANs, of Long Island City, in the county ofQueens and State of New York, have invented a new and Improved Method ofForging Hammers 5 and I do hereby declare the following to be a full andexact description of the same, reference being had to the accompanyingdrawings formin gA part of this specication, in which- Figure l is aperspective view of my improved machine. Fig. 2 is a sectional view,showing the mea-ns for adjusting the die-hold ers. Figs. 3, 4, 5, 6, 7,S, 9, 10, 11, and 12 are views, showing the dies used in the diiferentstages of the process. Fig. 13 is a perspective view of the shears forcutting 0E the end of the head; and Fig. 14, a plan view of the jaws forholding the blank while being punched.

Similar letters of reference in the accompanying drawings denote thesame parts.

This invention has for its object to forge hammers in a cheaper, better,and more rapid manner than has heretofore been done; and to this end itconsists in the peculiar formation and arrangement of a series ofdivided dies adapted to give the hammer its proper form by successivestages, the lirst pair of the series giving a rough outline to the steelblank, which is gradually finished by the rest, the upper half of eachdie being reciprocatcd vertically by a suitable mechanical contrivance.It also consists in the method of forging hammers, all of -which I willnow proceed to describe. l

In the drawing, A represents a suitable bedplate, on which the lowerhalf of each die is received, and from which, at each end, rise verticalstandards B. C represents a shaft having its bearings in the standardsB, and provided at each end with a cog-wheel, D, which latter mesheswith pinions E on the drivingshaft F above the shaft C, this beingoperated from the main driving-shaft by belting the latter to suitablepulleys. On the in ner sides of the standards I5 are vertical guides I,in which slides a horizontal cross-head, J. This latter is reciprocatedvertically by eccen tries K K on the shaft C, said eccentrics beingconnected with the cross-head by rods K K. From the lower side of thecross-head J de pend vertical tapped tubes L, which are so attached tothe cross-head as to turn freely, and are provided with orifices for theinsertion of a turning-handle. These tubes pass through orifices in astationary horizontal guide-block, M, and into their lower ends extendscrew stems N on the upper die-punch and shearholders O O1 02. The bed A.and die-holders O are provided with dovetail mortises, by means ofwhich the correspondingly dovetailed dies are attached in pairs, asshown in Fig. 1, and the punch and shear-l'lolders 0102 have similarmortises, in which the punchl? and upper shears R are held. The dies areshown in detail in Figs. 3, 4:, 5, 6, 8, 9, l0, 11, and 12, and are formaking machinists ballpene hammers. A1 A2 represent the rst pair of dieswhich give the first blow to the steel blank from which the hammer isformed, and impart a rough outline to the same. The second pair, Bl B2,next indent two sides of the blank, and take the iirst step towardforming the at sides. The blank is now placed in the holding-guide C',which is located under the punch P, and slides on a transverse dovetailguide on the bed A. A pair of spring-jaws, S, are pivoted 011 the bed A,so as to project over the guide C and grasp the blank on each side, andhold the same while the punch is be ing withdrawn. The surplus metal isnow cut from the end of the head by the shears It R', and the blank*passed to the first finishing dies Dl D2, which shape the edges of thehammer and impart the rst angles. The succeeding pairs, El E2 F1 F2,complete the formation of the sides and head of the hammer, the blankVhaving a pin inserted in its eye while in these dies, thus preventingthe filling of the latter. The dies El E2 are provided with convex facese, which act as fullers, pressing the metal outward from the center ofthe hammer and forcing it into all other parts of the die, while thedies F1 F2, having dat faces f, complete the sides and give thefinishing touch. By this method, a hammer can be forged at one heating,the dies being located in the most convenient manner, and operatedsimultaneously. Hence, the steel is not injured by repeated heatings,and the whole process can be atl tended to by one operator. The upperhold ers can b e adjusted independently by turning ing out the metal andperfecting the contour of the hammer, substantially as described.

3. Themethod of making hammers from a steel blank by subjecting theblank, rst, to the outlining-dies; secondly, to the convex dies forindenting the cheeks thirdly, to the punch.; fourthly, to the shears;ifthly, siXthly, and Seventhly, to the iinishing-dies, substantially asdescribed.

WILLIAM EVANS.

Witnesses MELVILLE CHURCH, W. READ.

